Analysis of Techniques for Correcting Power Factor of AC- DC Converters

With the advent of technology the use of power electronic devices rapidly increasing. Most of the power electronic devices require the rectifier i.e. AC- DC power converter for their working or charging purposes. Use of the power electronic converters introduces harmonics in the system thereby violating the limits of the international standard and also as the power level increases the harmonics of lower order which will deteriorates the power factor and thus affects the efficiency to a great extent. All these problems arises a great need of power factor correction. Here, in this paper analysis of different power factor correction topologies is done to understand their various techniques like passive and active and after that types of active power factor correction types are visualized and analyzed. The simulation result of the PFC buck and PFC boost converter communicate that both the techniques help to improvise the power factor.